feat:企业欢迎弹窗优化

docs/VSCode-Extension-API-Guide.md

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+# VS Code Extension API 核心知识点
+
+## 目录
+- [1. Extension 生命周期](#1-extension-生命周期) ⭐⭐⭐
+- [2. 激活事件 (Activation Events)](#2-激活事件-activation-events) ⭐⭐
+- [3. 命令系统 (Commands)](#3-命令系统-commands) ⭐⭐
+- [4. Webview API](#4-webview-api) ⭐⭐⭐⭐⭐ **面试重点**
+- [5. TreeView 和自定义视图](#5-treeview-和自定义视图) ⭐⭐
+- [6. 文件系统操作](#6-文件系统操作) ⭐⭐⭐
+- [7. 配置和存储](#7-配置和存储) ⭐⭐⭐⭐ **面试重点**
+- [8. 消息通知](#8-消息通知) ⭐
+- [9. 语言特性支持](#9-语言特性支持) ⭐
+- [10. 调试和诊断](#10-调试和诊断) ⭐
+
+---
+
+## 1. Extension 生命周期 ⭐⭐⭐
+
+### 1.1 核心函数 🔥必考
+
+```typescript
+// extension.ts
+import * as vscode from 'vscode';
+
+// 插件激活时调用（只调用一次）
+export function activate(context: vscode.ExtensionContext) {
+    console.log('Extension is now active!');
+
+    // 注册命令、视图、事件监听等
+    // 使用 context.subscriptions 管理资源
+}
+
+// 插件停用时调用（清理资源）
+export function deactivate() {
+    console.log('Extension is deactivated');
+    // 清理资源、关闭连接等
+}
+```
+
+### 1.2 ExtensionContext 重要属性 🔥必考
+
+```typescript
+interface ExtensionContext {
+    // 插件订阅管理（自动清理）
+    subscriptions: { dispose(): any }[];
+
+    // 工作区存储路径
+    storageUri: vscode.Uri | undefined;
+    globalStorageUri: vscode.Uri;
+
+    // 插件路径
+    extensionUri: vscode.Uri;
+    extensionPath: string;
+
+    // 状态存储
+    workspaceState: Memento;  // 工作区级别
+    globalState: Memento;     // 全局级别
+    secrets: SecretStorage;   // 敏感信息存储
+
+    // 环境变量
+    environmentVariableCollection: EnvironmentVariableCollection;
+}
+```
+
+### 1.3 资源管理最佳实践 🔥必考
+
+```typescript
+export function activate(context: vscode.ExtensionContext) {
+    // ✅ 推荐：使用 context.subscriptions 自动管理
+    context.subscriptions.push(
+        vscode.commands.registerCommand('extension.command', () => {})
+    );
+
+    // ❌ 不推荐：手动管理容易忘记清理
+    const disposable = vscode.commands.registerCommand('extension.command', () => {});
+    // 需要在 deactivate 中手动调用 disposable.dispose()
+}
+```
+
+---
+
+## 2. 激活事件 (Activation Events) ⭐⭐
+
+### 2.1 常用激活事件 📌重要
+
+```json
+// package.json
+{
+    "activationEvents": [
+        // 启动时激活
+        "onStartupFinished",
+
+        // 执行命令时激活
+        "onCommand:extension.helloWorld",
+
+        // 打开特定语言文件时激活
+        "onLanguage:javascript",
+        "onLanguage:verilog",
+
+        // 打开特定文件类型时激活
+        "onFileSystem:sftp",
+
+        // 打开特定视图时激活
+        "onView:myCustomView",
+
+        // 调试时激活
+        "onDebug",
+
+        // 打开特定 URI 时激活
+        "onUri",
+
+        // Webview 恢复时激活
+        "onWebviewPanel:myWebview",
+
+        // 任务执行时激活
+        "onTaskType:npm"
+    ]
+}
+```
+
+### 2.2 延迟激活策略 🔥必考
+
+```typescript
+// ✅ 推荐：使用 onStartupFinished 延迟激活
+"activationEvents": ["onStartupFinished"]
+
+// ❌ 不推荐：使用 * 会拖慢启动速度
+"activationEvents": ["*"]
+```
+
+---
+
+## 3. 命令系统 (Commands)
+
+### 3.1 注册命令
+
+```typescript
+// 注册简单命令
+const disposable = vscode.commands.registerCommand(
+    'extension.helloWorld',
+    () => {
+        vscode.window.showInformationMessage('Hello World!');
+    }
+);
+context.subscriptions.push(disposable);
+
+// 注册带参数的命令
+vscode.commands.registerCommand(
+    'extension.openFile',
+    (filePath: string) => {
+        vscode.workspace.openTextDocument(filePath).then(doc => {
+            vscode.window.showTextDocument(doc);
+        });
+    }
+);
+```
+
+### 3.2 执行命令
+
+```typescript
+// 执行内置命令
+await vscode.commands.executeCommand('workbench.action.files.save');
+
+// 执行自定义命令
+await vscode.commands.executeCommand('extension.openFile', '/path/to/file');
+
+// 获取所有可用命令
+const commands = await vscode.commands.getCommands();
+```
+
+### 3.3 常用内置命令
+
+```typescript
+// 文件操作
+'workbench.action.files.save'
+'workbench.action.files.saveAll'
+'workbench.action.closeActiveEditor'
+
+// 编辑器操作
+'editor.action.formatDocument'
+'editor.action.commentLine'
+'editor.action.selectAll'
+
+// 窗口操作
+'workbench.action.toggleSidebarVisibility'
+'workbench.action.terminal.new'
+'workbench.action.quickOpen'
+
+// Git 操作
+'git.commit'
+'git.push'
+'git.pull'
+```
+
+---
+
+## 4. Webview API ⭐⭐⭐⭐⭐ **面试重点**
+
+### 4.1 创建 Webview Panel 🔥必考
+
+```typescript
+const panel = vscode.window.createWebviewPanel(
+    'myWebview',              // viewType（唯一标识）
+    'My Webview',             // 标题
+    vscode.ViewColumn.One,    // 显示位置
+    {
+        enableScripts: true,  // 启用 JavaScript
+        retainContextWhenHidden: true,  // 隐藏时保留状态
+        localResourceRoots: [  // 允许访问的本地资源路径
+            vscode.Uri.joinPath(context.extensionUri, 'media')
+        ]
+    }
+);
+```
+
+### 4.2 设置 Webview 内容
+
+```typescript
+panel.webview.html = getWebviewContent();
+
+function getWebviewContent() {
+    return `<!DOCTYPE html>
+    <html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+        <title>My Webview</title>
+    </head>
+    <body>
+        <h1>Hello from Webview!</h1>
+        <button onclick="sendMessage()">Send Message</button>
+
+        <script>
+            const vscode = acquireVsCodeApi();
+
+            function sendMessage() {
+                vscode.postMessage({
+                    command: 'alert',
+                    text: 'Hello from Webview!'
+                });
+            }
+
+            // 接收来自 Extension 的消息
+            window.addEventListener('message', event => {
+                const message = event.data;
+                console.log('Received:', message);
+            });
+        </script>
+    </body>
+    </html>`;
+}
+```
+
+### 4.3 Webview 消息通信 🔥必考（项目核心）
+
+```typescript
+// Extension → Webview
+panel.webview.postMessage({
+    command: 'update',
+    data: 'some data'
+});
+
+// Webview → Extension
+panel.webview.onDidReceiveMessage(
+    message => {
+        switch (message.command) {
+            case 'alert':
+                vscode.window.showInformationMessage(message.text);
+                break;
+            case 'getData':
+                // 处理数据请求
+                panel.webview.postMessage({
+                    command: 'dataResponse',
+                    data: fetchData()
+                });
+                break;
+        }
+    },
+    undefined,
+    context.subscriptions
+);
+```
+
+### 4.4 Webview 生命周期管理 📌重要
+
+```typescript
+// 监听 Webview 关闭事件
+panel.onDidDispose(
+    () => {
+        // 清理资源
+        console.log('Webview disposed');
+    },
+    null,
+    context.subscriptions
+);
+
+// 监听 Webview 可见性变化
+panel.onDidChangeViewState(
+    e => {
+        if (e.webviewPanel.visible) {
+            console.log('Webview is now visible');
+        }
+    },
+    null,
+    context.subscriptions
+);
+```
+
+### 4.5 加载本地资源 📌重要
+
+```typescript
+// 获取本地资源 URI
+const scriptUri = panel.webview.asWebviewUri(
+    vscode.Uri.joinPath(context.extensionUri, 'media', 'script.js')
+);
+
+const styleUri = panel.webview.asWebviewUri(
+    vscode.Uri.joinPath(context.extensionUri, 'media', 'style.css')
+);
+
+// 在 HTML 中使用
+const html = `
+    <link href="${styleUri}" rel="stylesheet">
+    <script src="${scriptUri}"></script>
+`;
+```
+
+### 4.6 Webview 状态持久化 📌重要
+
+```typescript
+// Webview 中保存状态
+const vscode = acquireVsCodeApi();
+const state = vscode.getState() || { count: 0 };
+
+// 更新状态
+state.count++;
+vscode.setState(state);
+
+// Extension 中序列化状态
+panel.webview.options = {
+    enableScripts: true,
+    retainContextWhenHidden: true
+};
+
+// 恢复 Webview
+vscode.window.registerWebviewPanelSerializer('myWebview', {
+    async deserializeWebviewPanel(webviewPanel, state) {
+        webviewPanel.webview.html = getWebviewContent();
+        // 恢复状态
+        webviewPanel.webview.postMessage({ command: 'restore', state });
+    }
+});
+```
+
+---
+
+## 5. TreeView 和自定义视图
+
+### 5.1 创建 TreeView Provider
+
+```typescript
+class MyTreeDataProvider implements vscode.TreeDataProvider<TreeItem> {
+    private _onDidChangeTreeData = new vscode.EventEmitter<TreeItem | undefined>();
+    readonly onDidChangeTreeData = this._onDidChangeTreeData.event;
+
+    refresh(): void {
+        this._onDidChangeTreeData.fire(undefined);
+    }
+
+    getTreeItem(element: TreeItem): vscode.TreeItem {
+        return element;
+    }
+
+    getChildren(element?: TreeItem): Thenable<TreeItem[]> {
+        if (!element) {
+            // 返回根节点
+            return Promise.resolve([
+                new TreeItem('Item 1', vscode.TreeItemCollapsibleState.None),
+                new TreeItem('Item 2', vscode.TreeItemCollapsibleState.Collapsed)
+            ]);
+        }
+        // 返回子节点
+        return Promise.resolve([]);
+    }
+}
+
+class TreeItem extends vscode.TreeItem {
+    constructor(
+        public readonly label: string,
+        public readonly collapsibleState: vscode.TreeItemCollapsibleState
+    ) {
+        super(label, collapsibleState);
+        this.tooltip = `Tooltip for ${label}`;
+        this.command = {
+            command: 'extension.itemClicked',
+            title: 'Click Item',
+            arguments: [this]
+        };
+    }
+}
+```
+
+### 5.2 注册 TreeView
+
+```typescript
+const treeDataProvider = new MyTreeDataProvider();
+const treeView = vscode.window.createTreeView('myTreeView', {
+    treeDataProvider,
+    showCollapseAll: true
+});
+
+context.subscriptions.push(treeView);
+
+// 刷新视图
+treeDataProvider.refresh();
+```
+
+### 5.3 WebviewView Provider（侧边栏 Webview）
+
+```typescript
+class MyWebviewViewProvider implements vscode.WebviewViewProvider {
+    resolveWebviewView(
+        webviewView: vscode.WebviewView,
+        context: vscode.WebviewViewResolveContext,
+        token: vscode.CancellationToken
+    ) {
+        webviewView.webview.options = {
+            enableScripts: true
+        };
+
+        webviewView.webview.html = getWebviewContent();
+
+        webviewView.webview.onDidReceiveMessage(message => {
+            // 处理消息
+        });
+    }
+}
+
+// 注册
+vscode.window.registerWebviewViewProvider(
+    'myWebviewView',
+    new MyWebviewViewProvider()
+);
+```
+
+---
+
+## 6. 文件系统操作 ⭐⭐⭐
+
+### 6.1 读取文件 📌重要
+
+```typescript
+// 读取文本文件
+const uri = vscode.Uri.file('/path/to/file.txt');
+const content = await vscode.workspace.fs.readFile(uri);
+const text = Buffer.from(content).toString('utf8');
+
+// 使用 TextDocument API
+const document = await vscode.workspace.openTextDocument(uri);
+const text = document.getText();
+```
+
+### 6.2 写入文件
+
+```typescript
+// 写入文件
+const uri = vscode.Uri.file('/path/to/file.txt');
+const content = Buffer.from('Hello World', 'utf8');
+await vscode.workspace.fs.writeFile(uri, content);
+
+// 使用 WorkspaceEdit
+const edit = new vscode.WorkspaceEdit();
+edit.createFile(uri, { overwrite: true });
+edit.insert(uri, new vscode.Position(0, 0), 'Hello World');
+await vscode.workspace.applyEdit(edit);
+```
+
+### 6.3 文件监听
+
+```typescript
+// 监听文件变化
+const watcher = vscode.workspace.createFileSystemWatcher('**/*.js');
+
+watcher.onDidCreate(uri => {
+    console.log('File created:', uri.fsPath);
+});
+
+watcher.onDidChange(uri => {
+    console.log('File changed:', uri.fsPath);
+});
+
+watcher.onDidDelete(uri => {
+    console.log('File deleted:', uri.fsPath);
+});
+
+context.subscriptions.push(watcher);
+```
+
+### 6.4 工作区操作
+
+```typescript
+// 获取工作区文件夹
+const workspaceFolders = vscode.workspace.workspaceFolders;
+if (workspaceFolders) {
+    const rootPath = workspaceFolders[0].uri.fsPath;
+}
+
+// 查找文件
+const files = await vscode.workspace.findFiles(
+    '**/*.ts',      // include pattern
+    '**/node_modules/**'  // exclude pattern
+);
+
+// 打开文件
+const document = await vscode.workspace.openTextDocument(uri);
+await vscode.window.showTextDocument(document);
+```
+
+---
+
+## 7. 配置和存储 ⭐⭐⭐⭐ **面试重点**
+
+### 7.1 读取配置 📌重要
+
+```typescript
+// 读取配置
+const config = vscode.workspace.getConfiguration('myExtension');
+const value = config.get<string>('settingName', 'defaultValue');
+
+// 监听配置变化
+vscode.workspace.onDidChangeConfiguration(e => {
+    if (e.affectsConfiguration('myExtension.settingName')) {
+        console.log('Configuration changed');
+    }
+});
+```
+
+### 7.2 更新配置
+
+```typescript
+const config = vscode.workspace.getConfiguration('myExtension');
+
+// 更新用户配置（全局）
+await config.update('settingName', 'newValue', vscode.ConfigurationTarget.Global);
+
+// 更新工作区配置
+await config.update('settingName', 'newValue', vscode.ConfigurationTarget.Workspace);
+```
+
+### 7.3 状态存储 🔥必考
+
+```typescript
+// 工作区状态（仅当前工作区）
+await context.workspaceState.update('key', 'value');
+const value = context.workspaceState.get('key');
+
+// 全局状态（跨工作区）
+await context.globalState.update('key', 'value');
+const value = context.globalState.get('key');
+
+// 存储对象
+await context.globalState.update('userData', { name: 'John', age: 30 });
+```
+
+### 7.4 敏感信息存储 🔥必考（Token 管理）
+
+```typescript
+// 存储密码、Token 等敏感信息
+await context.secrets.store('apiToken', 'secret-token-value');
+
+// 读取
+const token = await context.secrets.get('apiToken');
+
+// 删除
+await context.secrets.delete('apiToken');
+
+// 监听变化
+context.secrets.onDidChange(e => {
+    console.log('Secret changed:', e.key);
+});
+```
+
+---
+
+## 8. 消息通知
+
+### 8.1 信息提示
+
+```typescript
+// 普通信息
+vscode.window.showInformationMessage('Operation completed!');
+
+// 警告
+vscode.window.showWarningMessage('This action may cause issues');
+
+// 错误
+vscode.window.showErrorMessage('Operation failed!');
+```
+
+### 8.2 带按钮的提示
+
+```typescript
+const result = await vscode.window.showInformationMessage(
+    'Do you want to continue?',
+    'Yes',
+    'No',
+    'Cancel'
+);
+
+if (result === 'Yes') {
+    // 用户点击了 Yes
+}
+```
+
+### 8.3 输入框
+
+```typescript
+// 简单输入
+const input = await vscode.window.showInputBox({
+    prompt: 'Enter your name',
+    placeHolder: 'John Doe',
+    validateInput: (value) => {
+        return value.length < 3 ? 'Name too short' : null;
+    }
+});
+
+// 快速选择
+const selected = await vscode.window.showQuickPick(
+    ['Option 1', 'Option 2', 'Option 3'],
+    {
+        placeHolder: 'Select an option',
+        canPickMany: false
+    }
+);
+```
+
+### 8.4 进度提示
+
+```typescript
+await vscode.window.withProgress(
+    {
+        location: vscode.ProgressLocation.Notification,
+        title: 'Processing...',
+        cancellable: true
+    },
+    async (progress, token) => {
+        token.onCancellationRequested(() => {
+            console.log('User canceled');
+        });
+
+        progress.report({ increment: 0, message: 'Starting...' });
+        await doWork1();
+
+        progress.report({ increment: 50, message: 'Half done...' });
+        await doWork2();
+
+        progress.report({ increment: 100, message: 'Complete!' });
+    }
+);
+```
+
+---
+
+## 9. 语言特性支持
+
+### 9.1 代码补全
+
+```typescript
+const provider = vscode.languages.registerCompletionItemProvider(
+    'javascript',
+    {
+        provideCompletionItems(document, position) {
+            const item = new vscode.CompletionItem('myFunction');
+            item.kind = vscode.CompletionItemKind.Function;
+            item.detail = 'My custom function';
+            item.documentation = 'This is a custom function';
+            item.insertText = new vscode.SnippetString('myFunction($1)$0');
+
+            return [item];
+        }
+    },
+    '.'  // 触发字符
+);
+
+context.subscriptions.push(provider);
+```
+
+### 9.2 悬停提示
+
+```typescript
+const provider = vscode.languages.registerHoverProvider('javascript', {
+    provideHover(document, position) {
+        const range = document.getWordRangeAtPosition(position);
+        const word = document.getText(range);
+
+        return new vscode.Hover([
+            `**${word}**`,
+            'This is a hover tooltip'
+        ]);
+    }
+});
+```
+
+### 9.3 诊断（错误提示）
+
+```typescript
+const diagnosticCollection = vscode.languages.createDiagnosticCollection('myExtension');
+context.subscriptions.push(diagnosticCollection);
+
+function updateDiagnostics(document: vscode.TextDocument) {
+    const diagnostics: vscode.Diagnostic[] = [];
+
+    const text = document.getText();
+    const regex = /TODO/g;
+    let match;
+
+    while ((match = regex.exec(text))) {
+        const range = new vscode.Range(
+            document.positionAt(match.index),
+            document.positionAt(match.index + match[0].length)
+        );
+
+        const diagnostic = new vscode.Diagnostic(
+            range,
+            'TODO found',
+            vscode.DiagnosticSeverity.Warning
+        );
+
+        diagnostics.push(diagnostic);
+    }
+
+    diagnosticCollection.set(document.uri, diagnostics);
+}
+```
+
+---
+
+## 10. 调试和诊断
+
+### 10.1 输出通道
+
+```typescript
+const outputChannel = vscode.window.createOutputChannel('My Extension');
+context.subscriptions.push(outputChannel);
+
+outputChannel.appendLine('Extension activated');
+outputChannel.show();  // 显示输出面板
+```
+
+### 10.2 日志记录
+
+```typescript
+// 使用 LogOutputChannel（带时间戳）
+const logger = vscode.window.createOutputChannel('My Extension', { log: true });
+
+logger.trace('Trace message');
+logger.debug('Debug message');
+logger.info('Info message');
+logger.warn('Warning message');
+logger.error('Error message');
+```
+
+### 10.3 错误处理
+
+```typescript
+try {
+    await riskyOperation();
+} catch (error) {
+    if (error instanceof Error) {
+        vscode.window.showErrorMessage(`Error: ${error.message}`);
+        logger.error(error.stack || error.message);
+    }
+}
+```
+
+---
+
+## 最佳实践总结
+
+### ✅ 推荐做法
+
+1. **资源管理**：所有 disposable 对象都放入 `context.subscriptions`
+2. **延迟激活**：使用 `onStartupFinished` 而不是 `*`
+3. **异步操作**：使用 `async/await` 处理异步操作
+4. **错误处理**：捕获异常并给用户友好提示
+5. **类型安全**：充分利用 TypeScript 类型系统
+6. **状态持久化**：使用 `globalState`/`workspaceState` 保存状态
+7. **敏感信息**：使用 `secrets` API 存储 Token、密码等
+
+### ❌ 避免做法
+
+1. 不要在 `activate` 中执行耗时操作
+2. 不要忘记清理资源（监听器、Webview 等）
+3. 不要在 Webview 中直接访问文件系统
+4. 不要在配置中存储敏感信息
+5. 不要阻塞主线程（使用 Worker 或异步操作）
+
+---
+
+## 参考资源
+
+- [VS Code Extension API 官方文档](https://code.visualstudio.com/api)
+- [Extension Samples](https://github.com/microsoft/vscode-extension-samples)
+- [Extension Guidelines](https://code.visualstudio.com/api/references/extension-guidelines)

src/views/welcomeModal.ts

@@ -19,40 +19,48 @@ export function getWelcomeModalContent(logoUri?: string): string {
         <div class="welcome-modal-header">
           <div class="welcome-icon">🎉</div>
           <h2>欢迎使用 IC Coder！</h2>
-          <p class="welcome-modal-subtitle">您已成功激活 15 天试用期，让我们开始探索 IC Coder 的强大功能吧！</p>
         </div>
 
         <div class="welcome-modal-body">
-          <div class="welcome-step">
+          <!-- 试用期提示 -->
-            <div class="welcome-step-icon">📝</div>
+          <div class="trial-banner">
-            <div class="welcome-step-content">
+            <span>您已获得 <strong>5 天企业版试用期</strong>，企业版试用期内Credits用量无限，并可无限制使用所有功能</span>
-              <h3>步骤 1：打开聊天面板</h3>
+          </div>
-              <p>点击侧边栏的 IC Coder 图标，或使用命令面板搜索 "IC Coder: Open Chat"</p>
+
+          <!-- IC Coder 简介 -->
+          <div class="intro-section">
+            <h3 class="section-title">关于 IC Coder</h3>
+            <p class="intro-text">IC Coder是一款The Agentic AI Verilog Coding Platform（自主式人工智能 Verilog 编码平台）。我们采用全球顶尖的IC Coder自研芯片设计微调模型，为代码生成提供强大的AI能力支撑。</p>
+
+            <div class="features">
+              <div class="feature-item">
+                <span class="feature-text">多智能体架构（Multi-Agent System）：多个专业化AI智能体协同工作，分别负责架构设计、代码生成、验证测试等不同环节</span>
+              </div>
+              <div class="feature-item">
+                <span class="feature-text">增强上下文引擎：智能理解和管理大规模设计上下文，确保生成代码的一致性和准确性</span>
+              </div>
+              <div class="feature-item">
+                <span class="feature-text">AI自主仿真：IC Coder提供完全自动化的仿真验证流程，无需手动编写测试代码</span>
+              </div>
             </div>
           </div>
 
-          <div class="welcome-step">
+          <!-- 按钮组 -->
-            <div class="welcome-step-icon">💬</div>
+          <div class="button-group">
-            <div class="welcome-step-content">
+            <button id="tutorialBtn" class="welcome-btn welcome-btn-secondary">
-              <h3>步骤 2：输入您的需求</h3>
+              <svg width="16" height="16" viewBox="0 0 16 16" fill="none">
-              <p>描述您想要生成的 Verilog 代码或需要帮助的问题，AI 将为您提供专业的解决方案</p>
+                <path d="M8 2C4.7 2 2 4.7 2 8s2.7 6 6 6 6-2.7 6-6-2.7-6-6-6zm0 10c-2.2 0-4-1.8-4-4s1.8-4 4-4 4 1.8 4 4-1.8 4-4 4z" fill="currentColor"/>
-            </div>
+                <path d="M8 5v3l2 2" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/>
+              </svg>
+              <span>查看使用教程</span>
+            </button>
+            <button id="welcomeStartBtn" class="welcome-btn welcome-btn-primary">
+              <span>开始使用</span>
+              <svg width="16" height="16" viewBox="0 0 16 16" fill="none">
+                <path d="M6 3L11 8L6 13" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+              </svg>
+            </button>
           </div>
-
-          <div class="welcome-step">
-            <div class="welcome-step-icon">🔬</div>
-            <div class="welcome-step-content">
-              <h3>步骤 3：运行仿真</h3>
-              <p>使用 "生成 VCD" 命令运行 iverilog 仿真，并通过波形查看器查看仿真结果</p>
-            </div>
-          </div>
-
-          <button id="welcomeStartBtn" class="welcome-btn welcome-btn-primary">
-            <span>开始使用</span>
-            <svg width="16" height="16" viewBox="0 0 16 16" fill="none">
-              <path d="M6 3L11 8L6 13" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
-            </svg>
-          </button>
         </div>
       </div>
     </div>
@@ -96,7 +104,7 @@ export function getWelcomeModalStyles(): string {
       border: 1px solid var(--vscode-widget-border);
       border-radius: 12px;
       width: 100%;
-      max-width: 500px;
+      max-width: 480px;
       box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
       animation: modalSlideIn 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
       overflow: hidden;
@@ -124,9 +132,10 @@ export function getWelcomeModalStyles(): string {
 
     .welcome-modal-header h2 {
       margin: 0 0 12px;
-      font-size: 24px;
+      font-size: 20px;
       font-weight: 600;
       color: var(--vscode-foreground);
+      line-height: 1.4;
     }
 
     .welcome-modal-subtitle {
@@ -140,37 +149,71 @@ export function getWelcomeModalStyles(): string {
       padding: 0 32px 32px;
     }
 
-    .welcome-step {
+    /* 试用期横幅 */
+    .trial-banner {
       display: flex;
-      gap: 16px;
+      align-items: center;
-      margin: 20px 0;
+      justify-content: center;
-      padding: 16px;
+      padding: 12px 16px;
       background: var(--vscode-editor-inactiveSelectionBackground);
       border-radius: 8px;
-      border-left: 4px solid var(--vscode-textLink-foreground);
+      margin-bottom: 20px;
-    }
-
-    .welcome-step-icon {
-      font-size: 24px;
-      flex-shrink: 0;
-    }
-
-    .welcome-step-content h3 {
-      margin: 0 0 8px;
-      font-size: 15px;
-      font-weight: 600;
-      color: var(--vscode-textLink-foreground);
-    }
-
-    .welcome-step-content p {
-      margin: 0;
       font-size: 13px;
       color: var(--vscode-descriptionForeground);
-      line-height: 1.5;
+      border-left: 3px solid var(--vscode-textLink-foreground);
+    }
+
+    .trial-banner strong {
+      color: var(--vscode-textLink-foreground);
+      font-weight: 600;
+    }
+
+    /* IC Coder 简介区域 */
+    .intro-section {
+      margin-bottom: 24px;
+    }
+
+    .section-title {
+      margin: 0 0 12px;
+      font-size: 15px;
+      font-weight: 600;
+      color: var(--vscode-foreground);
+    }
+
+    .intro-text {
+      margin: 0 0 16px;
+      font-size: 13px;
+      color: var(--vscode-descriptionForeground);
+      line-height: 1.6;
+    }
+
+    .features {
+      display: flex;
+      flex-direction: column;
+      gap: 10px;
+    }
+
+    .feature-item {
+      padding: 10px 12px;
+      background: var(--vscode-editor-inactiveSelectionBackground);
+      border-radius: 6px;
+      font-size: 13px;
+      color: var(--vscode-foreground);
+      border-left: 2px solid var(--vscode-textLink-foreground);
+    }
+
+    .feature-text {
+      display: block;
+    }
+
+    /* 按钮组 */
+    .button-group {
+      display: flex;
+      gap: 12px;
     }
 
     .welcome-btn {
-      width: 100%;
+      flex: 1;
       padding: 12px 16px;
       font-size: 14px;
       font-weight: 600;
@@ -181,18 +224,32 @@ export function getWelcomeModalStyles(): string {
       align-items: center;
       justify-content: center;
       gap: 8px;
-      background: var(--vscode-button-background);
-      color: var(--vscode-button-foreground);
       transition: all 0.2s;
-      margin-top: 24px;
     }
 
-    .welcome-btn:hover {
+    .welcome-btn-primary {
+      background: var(--vscode-button-background);
+      color: var(--vscode-button-foreground);
+    }
+
+    .welcome-btn-primary:hover {
       background: var(--vscode-button-hoverBackground);
       transform: translateY(-1px);
       box-shadow: 0 2px 8px rgba(0,0,0,0.2);
     }
 
+    .welcome-btn-secondary {
+      background: var(--vscode-button-secondaryBackground);
+      color: var(--vscode-button-secondaryForeground);
+      border: 1px solid var(--vscode-button-border);
+    }
+
+    .welcome-btn-secondary:hover {
+      background: var(--vscode-button-secondaryHoverBackground);
+      transform: translateY(-1px);
+      box-shadow: 0 2px 8px rgba(0,0,0,0.15);
+    }
+
     .welcome-btn:active {
       transform: translateY(0);
     }